Norton DR520, Owner'S Manual

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9
II OPERATION
C. Vacuum Hold Down Operation
The vacuum hold down base and pump work together to seal the drill to the work surface.
The vacuum pump requires 115 volt electrical supply. A 115 volt accessory outlet located
on the switch box is used to supply power to the vacuum pump. One outlet is consistently
supplied with power so that turning the motor off does not turn off the vacuum pump and
release the drill from the work surface.
1. Mount the column and carriage in the large vacuum hold down base.
2. Connect the vacuum pump to the vacuum base.
3. Wet the work area in order to achieve an effective seal.
4. Connect the vacuum pump cord into the top outlet of the receptacle in the switch box
above the motor. This will start the pump and create a seal between the base and the
work surface.
5. Adjust the leveling screws so that the core drill is level and resting lightly on the
vacuum seal.
6. Plug the vacuum pump cord into the live outlet of the receptacle in the switch box. This
will start the pump and create a seal between the base and the work surface.
7. Adjust the leveling screws so that the base is snug against the work surface. NOTE:
(Excessive tightening of the leveling screws will break the seal between the base and
the work surface).
8. To turn the vacuum pump off, unplug the power cord.
D. Water Collector Operation
The water collector unit (Part Number 402034) is designed to work with any core drill. It
can be used with any diameter core bit up to and including ten inch. The unit consists of a
tear dropped shaped ring with a rubber seal, a 115 volt electric water pump and a
drainage hose.
1. Place the pump in the small end of the tear-drop ring. Center the large area of the ring
over the area to be drilled.
2. Run the drainage hose from the pump to a drainage barrel and secure the hose to the
barrel with the hose hook.
3. PROPERLY GROUND THE PUMP, then plug it into the top outlet of the core drill
switch box.
4. Turn the pump off by unplugging the pump power cord at the cord drill switch box.
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